My 22 week old Andalusian had this come from her vent. She has not yet laid her first egg and I am very concerned. She seems a little quiet but eating just fine. I opened the membrane and it very much seems like the white of an egg. It doesn't look like a tape worm to me, even though there are some creases in it. I've felt her vent and pelvis and I don't feel an egg. Advice?